Effects of the synthetic method on the particle size and purity of magnetite

作者：Jaramillo Tabares Beatriz; Zuleta Gil Alejandro Alberto; Jaramillo Isaza Franklin

来源：Revista Facultad de Ingenieria-Universidad de Antioquia, 2009, (50): 9-16.

• Magnetite synthesis
• nanometric magnetite
• magnetite characterization

The characterization of magnetites synthesized by methods reported with some modifications is presented. The influence on purity and particle size of the obtained oxides is discussed. The samples were characterized by Mossbauer Spectroscopy at room temperature, particle size analysis by light scattering and by transmission electron microscopy of naked particles. The results showed that depending on the method of synthesis there are variations on stoichiometry and composition of magnetites, being this difference more important when the rate of addition of the alkaline solution to the combined ferrous and dispersant solution is changed. Moreover, it has been found strong agglomeration evidenced by TEM, however the sizes of the individual crystallites are in the nanometer scale.

• 出版日期2009-12